A7116
AiT Semiconductor Inc.
www.ait-ic.com
DC-DC CONVERTER/ BUCK (STEP-DOWN)
1.5MHz, 700mA SYNCHRONOUS WITH LOW QUIESCENT CURRENT
PIN DESCRIPTION
Top View
Top View
Function
Pin #
Symbol
RUN
A
B
Regulator Enable control input. Drive RUN above 1.25V to turn on the part. Drive
RUN below 0.55V to turn it off. In shutdown, all functions are disabled drawing <1µA
supply current. Do not leave RUN floating.
1
3
2
3
2
5
GND
SW
Ground
Power Switch Output. It is the Switch note connection to Inductor. This pin connects
to the drains of the internal P-CH and N-CH MOSFET switches.
Supply Input Pin. Must be closely decoupled to GND, Pin 2, with a 2.2µF or greater
ceramic capacitor.
4
5
1
4
VIN
VFB (Adjustable): Feedback Input Pin. Connect FB to the center point of the external
resistor divider. The feedback threshold voltage is 0.6V.
VFB/VOUT
VOUT (Fixed Output): Output Voltage Feedback Pin. An internal resistive divider divides
the output voltage down for comparison to the internal reference voltage.
REV1.2
- JAN 2009 RELEASED, MAY 2016 UPDATED -
- 2 -
AITSEMI [ AiT Semiconductor ]
